Xi’an Chancemate Petroleum Mechanical Co.,Ltd

reversing sub-back off sub

Product pictures of reversing sub-back off sub

reversing sub is also called back off sub or reversing spear , which is a special tool for revering stuck drill stem above stuck point in drilling and work over operation. In treatment of stuck drill stem, reversing sub-back off sub can work as a fishing pin tap in reversing operation.When fish is stuck or can not be reversed in fishing or reversing operation,the fish can be reversed from reversing sub and the fishing drill tool can be tripped out. sub can be replaced taper tap in back-off operation while dealing with stuck accident.

 Specifications of reversing sub-back off sub

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